Updates this node's value to the specified value.
Source
void updateValue(Object update, {bool force: false}) { _valueReady = true; if (update is ValueUpdate) { _lastValueUpdate = update; callbacks.forEach((callback, qos) { callback(_lastValueUpdate); }); } else if (_lastValueUpdate == null || _lastValueUpdate.value != update || force) { _lastValueUpdate = new ValueUpdate(update); callbacks.forEach((callback, qos) { callback(_lastValueUpdate); }); } }